Mostrar el registro sencillo del ítem
dc.contributor.author
Lortie, Christopher J.
dc.contributor.author
Munshaw, Michael
dc.contributor.author
Zikovitz, Andrea
dc.contributor.author
Hierro, Jose Luis
dc.date.available
2019-08-14T22:16:11Z
dc.date.issued
2009-03
dc.identifier.citation
Lortie, Christopher J.; Munshaw, Michael; Zikovitz, Andrea; Hierro, Jose Luis; Cage matching: Head to head competition experiments of an invasive plant species from different regions as a means to test for differentiation; Public Library of Science; Plos One; 4; 3; 3-2009; 1-5
dc.identifier.issn
1932-6203
dc.identifier.uri
http://hdl.handle.net/11336/81629
dc.description.abstract
Many hypotheses are prevalent in the literature predicting why some plant species can become invasive. However, in some respects, we lack a standard approach to compare the breadth of various studies and differentiate between alternative explanations. Furthermore, most of these hypotheses rely on 'changes in density' of an introduced species to infer invasiveness. Here, we propose a simple method to screen invasive plant species for potential differences in density effects between novel regions. Studies of plant competition using density series are a fundamental tool applied to virtually every aspect of plant population ecology to better understand evolution. Hence, we use a simple density series with substitution contrasting the performance of Centaurea solstitialis in monoculture (from one region) to mixtures (seeds from two regions). All else being equal, if there is no difference between the introduced species in the two novel regions compared, Argentina and California, then there should be no competitive differences between intra and inter-regional competition series. Using a replicated regression design, seeds of each species were sown in the greenhouse at 5 densities in monoculture and mixed and grown till onset of flowering. Centaurea seeds from California had higher germination while seedlings had significantly greater survival than Argentina. There was no evidence for density dependence in any measure for the California region but negative density dependence was detected in the germination of seeds from Argentina. The relative differences in competition also differed between regions with no evidence of differential competitive effects of seeds from Argentina in mixture versus monoculture while seeds from California expressed a relative cost in germination and relative growth rate in mixtures with Argentina. In the former instance, lack of difference does not mean 'no ecological differences' but does suggest that local adaptation in competitive abilities has not occurred. Importantly, this method successfully detected differences in the response of an invasive species to changes in density between novel regions which suggests that it is a useful preliminary means to explore invasiveness.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Public Library of Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Centaurea Solstitialis
dc.subject
Invasiveness
dc.subject
Plant Competition
dc.subject
Population Differentiation
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Cage matching: Head to head competition experiments of an invasive plant species from different regions as a means to test for differentiation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-08-14T18:45:02Z
dc.journal.volume
4
dc.journal.number
3
dc.journal.pagination
1-5
dc.journal.pais
Estados Unidos
dc.journal.ciudad
San Francisco
dc.description.fil
Fil: Lortie, Christopher J.. York University; Canadá
dc.description.fil
Fil: Munshaw, Michael. York University; Canadá
dc.description.fil
Fil: Zikovitz, Andrea. University of Toronto; Canadá
dc.description.fil
Fil: Hierro, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina
dc.journal.title
Plos One
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1371/journal.pone.0004823
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0004823
Archivos asociados